/Engine/Plugins/Runtime/MeshModelingToolset/Source/ModelingComponents/Public/Selection/GeometrySelector.h
FGeometrySelectionHandlestores a Selection and an Identifier for the geometry object that the Selection is defined relative to
struct FGeometrySelectionHandle
FGeometryIdenti...
Identifier
constUE::Geome...
Selection
IGeometrySelect...
Selector
Optional Selector for SelectionHandle